Unable to load persistence provider

hi,
i'm using spring context to reimplement some java methods in SOA suite.
I have a deplyed and runnable Spring MVC project, which use hibernate to connect between database and project POJO classes. i use this spring project's java methods which are used those POJO classes and DAO classes by which we access database.
Now i want to implement each methods in SOA suite . for that I define some spring contexts corresponding to each methods.
i added required jar files in project class path and added persistance.xml, orm.xml and spring project's MANIFEST.MF. after that for checking, i added main() method in ech spring context's impplementation classes to check if those methods are individual running or not. but yes, they are running in JDeveloper.
now i deploy this SOA project in weblogic enterprise manager, then test the service. its not work at all. in stacktrace i got following error/
WARNING: Unable to load persistence provider "oracle.toplink.essentials.PersistenceProvider" due to "oracle.classloade
util.AnnotatedClassNotFoundException:
Missing class: oracle.toplink.essentials.PersistenceProvider
Dependent class: org.apache.openjpa.persistence.PersistenceProductDerivation
Loader: sun.misc.Launcher$AppClassLoader@27770641
Code-Source: /C:/Fusion11g/Middleware11g_3/modules/org.apache.openjpa_1.1.0.0_1-1-1-SNAPSHOT.jar
Configuration: /C:/Fusion11g/Middleware11g_3/modules/org.apache.openjpa_1.1.0.0_1-1-1-SNAPSHOT.jar
This load was initiated at default.composite.RulesForLoanOrigination.soa_75e4602c-da8d-4a9d-b6b3-747aa3ee5372:1.0 usin
the Class.forName() method.
INFO: Found persistence provider "oracle.toplink.essentials.PersistenceProvider". OpenJPA will not be used.
WARNING: Unable to load persistence provider "oracle.toplink.essentials.PersistenceProvider" due to "oracle.classloade
util.AnnotatedClassNotFoundException:
Missing class: oracle.toplink.essentials.PersistenceProvider
Dependent class: org.apache.openjpa.persistence.PersistenceProductDerivation
Loader: sun.misc.Launcher$AppClassLoader@27770641
Code-Source: /C:/Fusion11g/Middleware11g_3/modules/org.apache.openjpa_1.1.0.0_1-1-1-SNAPSHOT.jar
Configuration: /C:/Fusion11g/Middleware11g_3/modules/org.apache.openjpa_1.1.0.0_1-1-1-SNAPSHOT.jar
This load was initiated at default.composite.RulesForLoanOrigination.soa_75e4602c-da8d-4a9d-b6b3-747aa3ee5372:1.0 usin
the Class.forName() method.
INFO: Found persistence provider "oracle.toplink.essentials.PersistenceProvider". OpenJPA will not be used.
java.lang.ExceptionInInitializerError
at com.originator.dao.LoanDAO.findByPK(LoanDAO.java:23)
at com.origination.business.RiskCalculation.calculateRisk(RiskCalculation.java:24)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at weblogic.sca.engine.WlsScaService.invokeTargetBeanMethod(WlsScaService.java:128)
at weblogic.sca.engine.WlsScaService.messageInvoker(WlsScaService.java:92)
at weblogic.sca.engine.WlsScaService.invoke(WlsScaService.java:39)
at weblogic.sca.engine.WlsScaEngine.messageInvoker(WlsScaEngine.java:114)
at weblogic.sca.engine.WlsScaEngine.invoke(WlsScaEngine.java:66)
at oracle.integration.platform.blocks.java.SpringServiceEngine.request(SpringServiceEngine.java:148)
at oracle.integration.platform.blocks.mesh.SynchronousMessageHandler.doRequest(SynchronousMessageHandler.java:
9)
at oracle.integration.platform.blocks.mesh.MessageRouter.request(MessageRouter.java:179)
at oracle.integration.platform.blocks.mesh.MeshImpl.request(MeshImpl.java:155)
at sun.reflect.GeneratedMethodAccessor1874.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:307)
at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.jav
182)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:149)
at oracle.integration.platform.metrics.PhaseEventAspect.invoke(PhaseEventAspect.java:59)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)
at $Proxy272.request(Unknown Source)
at oracle.integration.platform.blocks.soap.WebServiceEntryBindingComponent.doMessageProcessing(WebServiceEntry
ndingComponent.java:1169)
at oracle.integration.platform.blocks.soap.WebServiceEntryBindingComponent.processIncomingMessage(WebServiceEn
yBindingComponent.java:768)
at oracle.integration.platform.blocks.soap.FabricProvider.processMessage(FabricProvider.java:113)
at oracle.j2ee.ws.server.provider.ProviderProcessor.doEndpointProcessing(ProviderProcessor.java:1168)
at oracle.j2ee.ws.server.WebServiceProcessor.invokeEndpointImplementation(WebServiceProcessor.java:996)
at oracle.j2ee.ws.server.provider.ProviderProcessor.doRequestProcessing(ProviderProcessor.java:562)
at oracle.j2ee.ws.server.WebServiceProcessor.processRequest(WebServiceProcessor.java:222)
at oracle.j2ee.ws.server.WebServiceProcessor.doService(WebServiceProcessor.java:185)
at oracle.j2ee.ws.server.WebServiceServlet.doPost(WebServiceServlet.java:430)
at oracle.integration.platform.blocks.soap.FabricProviderServlet.doPost(FabricProviderServlet.java:477)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:227)
at weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:125)
at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:300)
at weblogic.servlet.internal.TailFilter.doFilter(TailFilter.java:26)
at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
at oracle.dms.wls.DMSServletFilter.doFilter(DMSServletFilter.java:330)
at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.doIt(WebAppServletContext.java:3684)
at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:3650)
at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321)
at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:121)
at weblogic.servlet.internal.WebAppServletContext.securedExecute(WebAppServletContext.java:2268)
at weblogic.servlet.internal.WebAppServletContext.execute(WebAppServletContext.java:2174)
at weblogic.servlet.internal.ServletRequestImpl.run(ServletRequestImpl.java:1446)
at weblogic.work.ExecuteThread.execute(ExecuteThread.java:201)
at weblogic.work.ExecuteThread.run(ExecuteThread.java:173)
Caused by: javax.persistence.PersistenceException: No Persistence provider for EntityManager named OriginatorModel: T
following providers:
org.eclipse.persistence.jpa.PersistenceProvider
kodo.persistence.PersistenceProviderImpl
org.apache.openjpa.persistence.PersistenceProviderImpl
Returned null to createEntityManagerFactory.
at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:154)
at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:83)
at com.originator.dao.EntityManagerHelper.<clinit>(EntityManagerHelper.java:21)
... 53 more
what i guess, after deploy, projects sca.jar do not takes those dependent jars (jpa.jar, toplink.jar,toplink-essential.jar etc) which i given in classpath.
but i don't khonw what is the actual problem.
please help me

stick them into sca-inf/lib directory, and they are deployed and loaded.
hth clemens

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